Malicious PDF — malware analysis report

Static analysis result for SHA-256 359ffcae17577e8b…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 03:06:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2641bc8550ce743824255f1127079f35 SHA-1: a37cad3c318db42fb37b0d18845ad595b1dce0f2 SHA-256: 359ffcae17577e8bb9e7b7254baf74ff3175b7b46e12ea26f1fe5a8c8a0ac4ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and sites offering 'free Robux' or game hacks, indicating a scam or phishing attempt. The presence of a visual download button further supports the lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/free-robux-form-game-hack In PDF document text
    • http://bgnails.nl/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/hack-that-thing-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-elemental-battlegrounds-hack-diamonds_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/robux-free-real-obby_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/como-conseguir-badges-hack-roblox_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-roblox-strucid-account_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-tiktok-app_GM835599320.pdfIn PDF document text
    • http://bgnails.nl/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/comment-hacker-roblox-pour-des-robux-avec-cheat-engine_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000301b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301B 23064 bytes
SHA-256: c1491abe3bc71b82d88fa19fd5b77616d2b4eec98fd0107b66ab3f69be974c70
font_01_sfnt_off000063f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F7 18792 bytes
SHA-256: 32b894fc70e50a81d4a83f7d09aabddf3468f8ef566b6c103f519acfc72a5b22

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